slowlx5.0:what was your rwhp numbers?Notice you didnt post those.Due to my porting which I hoged out my torque didnt go up alot but I gain 107hp to the wheels at 5700rpm.My stock torque was 289 if I had 21more CIs then I would be at 290+rwhp/320+rwtq with a stock intake and stock cams not to shabby those cubes help out alot with your motor numbers if you only had 281CI then you would be in the 280s in rwtq.Id be willing to bet my avg.tq to the wheels would kill you even though you have more peak numbers.I dont think alot of 5.0lds realize how smooth the powerbands are in these cars they just dont feel like a 5.0ld from the seat of the pants drivin but at the track that long powerband shines through.
Mileage is not as bad on a 4.6l as it is on a 5.0ld.As long as it is under 70000 youll be fine,which is alot for any car.When I blew a piston on mine my engine builder asked me if I just rebuilt the motor and had another failure because it looked so good in there, no wear on anything and I have 40000 miles on mine.
JOEL